<template>
  <div class="wrapper">
    <swiper :options="swiperOption" v-if="showSwiper">     <!-- v-if="showSwiper"  使轮播图从第一页开始播放-->
      <!-- slides -->
      <swiper-slide v-for="item of list" :key="item.id">
        <img class="swiper-img" :src="item.imgUrl">
      </swiper-slide>
      <div class="swiper-pagination"  slot="pagination"></div>
    </swiper>
  </div>
</template>

<script>
export default {
  name: 'HomeSwiper',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        pagination: '.swiper-pagination',
        loop: true // 可循环轮播
      }
    }
  },
  computed: {
    showSwiper () {
      return this.list.length
    }
  }
}
</script>

<style scoped lang="stylus">
  /* >>> 打破scoped的限制*/
  .wrapper >>> .swiper-pagination-bullet-active {
    background: #fff
  }
  .wrapper {
    overflow:hidden
    width:100%
    height:0
    padding-bottom :20%
    //在图片没出现时，为图片留出足够的高度
  }
  .swiper-img {
    width: 100%
  }
</style>
